Well tool



I 1 1946- R. G. TAYLOR. JR

/ WELL TOOL Filed Oct. 28; 1942- 2 Sheets-Sheet 1 5 E22 /.9 .fi ii g isf/g. Z

1 HWHQUOR /?A YMO/VD G. 72mm, JR. H

TTORNEY Patented May 28, 1946 g g m Raymond G. Taylor, Jn, Dallas, Tom,assignor to The Guiberson Corporation, Dallas, Ten, a i corporationof'Delaware I i Application Octobe 28, io iaseriei' No. 462,717

13 Claims.

The invention relates to a retrievable well tool, such as, forinstance,a bottom hole choke and Figure is a cross-sectional view taken on theline 5--5 of Figure 2. i a

and 2, a running-in is adapted for use in a string of tubing in an oilReferring to Figures 1 r well. This tubing is provided with joints, themechanism supports the well tool and the enends of the tubing beingseparated slightly and 5 tire, assembly is lowered into the tubing I byconnected by an outside collar, thereby forming a means of a wire line,2. The wire line, supp rts an annular channelway between the sectionsof the running-in -mechanism which includes a the tubing. The inventionrelates to utilizing socket 3 which supportsa rodfi, onlwhich a colthisannular ch'annelway as a means to anchor lar 5 'is slidable. Attached tothe collar 5 are the retrievable bottomhole choke. springs 6 which arebowed outwardly ancl contact A t object, of t invention is prothe innersurface of the tubing so as to create a vision of a well tool which maybe lowered into d s- The lower ends ofthe sp gs 6 are sethe tubing by 9,i 11 and after t W9 tool cured to a hollow sleeve 1 which is provided atits has been anchored in the tubing, the wire line 1 lower end With andly, extending cam surand certain parts carried thereby may be removedface A the Parts are we m the t i from the well, leaving the well toolsecurely posithe friction between the springs 6 and the tubing tioned atthe desired point in the tubing, I causes the sleeve 5 to rest againstthe stop at Another object of the invention is the proh lower n of theSocket P is shown In vision of means to retrieve the well tool so thatFlgure The am s at Its lower end a it can be remov d fro the n 2o latchmember 9 wh ch, at its lower end, forms a Another object of theinvention is the elimis1 eeVe The m is provided nation of all shear pinsor other parts which must igxg g sig g g gi s a g g i g 225 55 m A w e l1, 0 that the head projects Another ob ect of the invention 15 toprovide as viewed m Figure 5 i 1 from the member 9 so that it would be astrong, sturdy device which is simple in conoutward y engaged by the camsurface ,8, if the members struction, easy to manufacture with partswhich 1 and 9 moved relative to each other a sufficient an be easilyreplaced, if this should be necesc extent to cause such engagement. Theslide pin g Wear or and the II carries a latch ll which protrudesthrough a m nanon of comp mated strum-Pm Whlch might hole in the sleevel0, and so that it will underlie easily become damaged or requireconstant ada shoulder |5carr1ed by a mandrel |5 c0mpfls Justment' ingpart of a retrievable well tool.

Other ob eets and advantages of the invention The mandrel "515 providedwitha lonmtudmab m the detalled spemficatmn and ly extending bore I!through which wellliquid clams Whlch followa a may pass. The mandrel isalso provided with an m invention be m undFrstoofi by 3- intermediateshoulder 18 so that the section ferring to attached drawmgs Whlchthereof above the shoulder I8 is of lesser diameter figure 1 15 anelFvational View Partly in than the section below the said shoulder.sectmn, d showmg the tool and the relative 40 A sleeve 19 surrounds aPortion of the mandrel p siti n of th parts t r o in th nditi n in It.This sleeve is provided with a shoulder 20, which they would be whilethe ol isbeing run and the mandrel is provided with a shoulder 2|. intothe well, A coil spring 22 is positioned between the shoul-Figure2isaview similar to Figure 1, but showders 2n and 2| so as t urget mandrel, l6 n the runnin n echanism unlatched from downwardly relativeto the sleeve l9.-,'I'he'sleeve the well tool Jus prior to the runn -i 11 15 i provided with anannular channeiway 23,

being lifted from the well tool, ,and the lower portion of the sleeve I0is proi ure 3 is an elevational view, P tly in crossvided with holes 24which receive steel balls 25. i i section, of the well tool with therunning-in when the parts are in the positionshown in 1 j mechanismremoved therefrom and with the Figure 1, the upper end of the mandrel I6is well tool locked in the well tubing, positioned within the sleeve l0and the mandrel Figure 4 is an elevational view, partly in crossholdsthe balls 25 in the holes 24 and channelway section, showing thewelltool with a retrieving 23, sothat the sleeve l9 isthereby locked to the1 tool latched thereto with the inner mandrel being sleeve I0, and itwill be remembered that the pulled from behind the locking dogs, andlatch I4 is latching the latch member 9 to the f 1 .i ar fot: the; partsas the running-in mechanism and .retrievable well tool are lowered inthe tubing l.

, retrievable choke.

' not move the sleeve l6 downwardly so as to 1 mandrel l6 so that whenthe parts ar in this position, there can be no relative movement betweenthe mandreLLiJhe sleeve 19 and the run- A register with channel section30 in the dogs,

and a garter spring 3| passes circumferentially around the dogs and thesleeve l9, and is positioned in the channel '30, This spring tends tohold the said dogs'in their rtraiitedpositions, as shown in Figure 1.The sleeve I9 continues downwardly a short distance below the said dogsand is secured to a hollow sleeve 32 which carries a sealing cup 33.-The sleeve 32 is connected by a colla 34 to a choke 35.

The running-in mechanism includes the parts shown in Fig. 1 whichsupport. the 'parts'shown in -Fig. 3,- and- Which-"may; be removed fromthe well, .leaving'the well tool in the well tubing. The well toolincludes the parts which may be anchored in. the well and lefttherein-when the running-in tool is removed.

As shown in Figure 1, the running-in tool and the retrievable well tool.arealllowered into the tubing by the wire line}, with. the collar 5resting against the-lower end -of the socket 3. There rrv relativemovement between any Succeedingsectionsofthe tubing I are slightlyspaced apart and are connected by a collar 36 forming an annularchannelway 31.

When it is desired to set the retrievable choke in the tubing, the wire.line is raised. The drag between the spring 6 and the tubing causes thecollar 5 and sleeve I to tend to remain stationary relative to thetubing,so that the latch member 9 is moved upwardly into the hollowsection of the sleeve 1, resulting in the head |2 of the slide loweredto a point adjacent the channelway 31,

" whereupon the cam surface 26 would move these dogs outwardly as thespring 22 moves the mandrel'downwardly so that the parts would then bein the position shown in Figure 2. At this time the steel balls 25 wouldbe released so that the running-in mechanism would be released from thewell tool and could be raised to the surface of the Well, leaving theretrievable well tool in the well, as is shown in Figure 3.

When it is desired to remove the retrievable well tool from the well, aretrieving mechanism is lowered on a wire line 38, as is shown in Figure4. The wire line 38 supports a socket 39, which carries a rod 40supporting a hollow sleeve 4|, which has an upwardly flaring surface 42near the lower inner portion thereof. Within the sleeve 4| are dogs 43provided with grab teeth 44. The dogs' 43 are normally urged downwardlycause the grab teeth 44 to clench the upper end smaller diameter portionof the mandrel l6 above the shoulder I8 will now be behind the steelballs 25, thereby allowingthe steel balls to move inwardly outof thechannelway 23 and thereby release the sleeve l'0 forming a part of therunningin tool from the sleeve I9 forming a part of the However, thespring 22 canposition it behind the dogs 21 unless the dogs are adjacentone of the channelways 31 in the tubing, for there is not sufflcientclearance between the lower section of the mandrel and the tubing topermit actuation of the dogs 2'7 except at the channelway 31 at one ofthe tubing joints. It is only at this point that thedogs 21 can moveoutwardly against the tension of the spring 3| a sufilcient distance toallow the lower portion of the mandrel to be positioned behind saiddogs. Therefore, if the operator should attempt to set the retrievablewell tool at a point other than a tubing joint, the steel balls 25 wouldnot be unlocked until the dogs had been raised or by means of a spring45. The retrieving tool can, therefore, be lowered into the well so thatthe cam surface 46 at the lower end of the sleeve 4| will center theretrieving tool relative to the mandrel I6, and so that the upper end ofthe mandrel will project, upwardly through the dogs An upward pull onthe wire line 38 will of the mandrel I6, the flaring surface 42 urgingthese dogs inwardly. The mandrel I6 is now elevated as the wire line israised, thereby moving the lower section of the mandrel from behind thedogs 2'! so that these dogs will be cammed by way of illustrationherein, and I desire to.

claim the same broadly, reserving-to myself the right to make suchchanges and modifications therein as may fairly fall within the scope ofthe appended claims.

Having now described my invention,'I claim:

1. In combination, a wire line, a rod supported by said wire line, alatch member cargied by said rod; said latch member including alaterally slidable pin and latch, a releasable well tool including amandrel having a shoulder which may be engaged by said latch to supportthe mandrel and cam means slidable on said rod to actuate said pin torelease the latch from the mandrel when the wire line is raised relativeto the cam means.

2. In combination, a wire line, a rod supported by said wire line, alatch member 0 rried by said rod, said latch member including a aterallyslidable pin and latch, a releasable well tool including a mandrelhaving a shoulder which may be engaged by said latch to support themandrel, a sleeve'slidable on said rod and provided with a cam surface,means to hold said sleeve stationary when the wire line carrying the rodand latch member is raised, said cam surface serving as a means toactuate said pin to release the mandrel when the wire line is raisedsaid sleeve tolseal the space between said is supported thereby, meanswhereby the latch is released from the mandrel when the wire line israised relative to said means, said second sleeve being provided with achannelway, said first sleeve being provided with holes, balls held inmay be lowered into a tubing string having an, nular channelways at,tubing joints, a sleeve place in said channelway and holes by saidthe'tubing joint and a choke supported by said sleeve. H 9. Incombination, a hollow mandrel which slidable on said mandrel, saidsleeve being provided with a plurality of recesses, dogs carried by saidsleeve in said recesses, means tomove the mandrel relative to thesleeve, means whereby the movement of said mandrel will move the dogsoutwardly of the sleeve into locking engageslidable on said mandrel,said sleeve being pro- 1 vided with a plurality of recesses, dogspivoted to said sleeve and lying partlywithin said recesses and means tomove said mandrel relative to said sleeve, and means whereby themovement of said mandrel will move said dogs outwardly into look ingengagement with the tubing joint.

5. In combination, a hollow mandrel which may be lowered into a tubingstring having annular channelways at tubing joints, a sleeve slidable onsaid mandrel, said sleeve being provided with a plurality of recesses,pivoted dogs carried by said sleeve in said recesses, a cam forming apart of said mandrel and means to move said mandrel relative to saidsleeve to move said cam into engagement with said dogs to move the dogsoutwardly into locking-engagement with. the tubing joint, the dogshaving a thickness greater than the distance between the inner wall ofthe tubing string and the outer surface of the cam on the mandrel.

6. In combination, a hollow mandrel which may be lowered into a tubingstring having arinular channelways at tubing joints, a sleeve slidableon said mandrel, said sleeve being provided with a plurality ofrecesses, dogs carried mentwith the tubing string and a sealing cup andachoke supported by said sleeve.

10; In combination, a hollow mandrel which may be lowered into a tubingstring having annular channelways at tubing joints, a sleeve,

slidable on said mandrel, a plurality of dogs carried by said sleeve,said dogs whenin retracted position projecting inwardly of said sleeve,means tending to move said mandrel relative to said sleeve so as tocause said mandrel toproject said dogs outwardly of the sleeve, saiddogs having a thickness greater than the distance between said mandreland the main section of the tubing string so that said dogs prevent saidmandrel from fully moving the dogs outwardly except when the dogs 0 arefirst positioned opposite one of said channelto move said mandrelrelative to said sleeve to position said cam surface behind said dogsand by said sleeve in said recesses, a cam forming, a a I part of saidmandrel, means to move said mandrel relative to said sleeve to move saidcam into ena of said channelways.

gagement with said dogs to move the dogs outwardly into lockingengagement with the tubing joint, the dogs having a thickness greaterthan the distance between the inner wall of. the tubing string and theouter surface of the camon the mandrel, and a garterspring engaging saiddogs and tending to hold said dogs in their retracted. positions. g 1

7*, In combination, a hollow mandrel which maybe lowered intoatubingstring having arr-1 nular channelways at tubing joints, a sleeveslidable on said mandrel, said' sleeve being provided with a pluralityof recesses,- dogs;=carrled by said sleeve in said; recesses, means tomove the mandrel relative Jto, ,sleeve;} means whereby the movementf'otsaidlmandrel willimove the dogs outwardlyinto lockingengagement withthetubing joint 'and. a sealing cup supported by and the tubing string.v

8, In combination, a hollow mandrel which may be lowered intqa tubingstring having annular channelways at tubing joints, a sleeve slidable onsaid mandrel, said-sleeve being provided with aplurality of recesses,pivoted dogs carried by said sleevein said recesses, a spring tending tohold said dogs in their retracted posisleeve to cause it to engage andmove the dogs outwardly of the sleeve against the tensionof 3 toolhaving a mandrel may be lowered into a 5 movethem outwardly of saidsleeve into engagement with the tubing string. said dogs being of athickness greater than the distance between saidenlarged portion and themain section of the tubing string so as to prevent the enlarged portion"from moving behind said dogs, except when, said dogs are firstpositioned opposite one 1 2. A'running-in mechanism" whereby a welltubingand secured to the tubing at a desired depth, including. a ;rod, awire line supporting said rod, .8, collar slidable on said rod, bowedsprings secured to said collar and engaging the inner wall of thetubing, a stop to limit the upported by said springs, a latch membercarried. by said rod, said latch member carrying a latch. adapted toengage saidmandrel and support the sleeve tion, means to move themandrel relative to said ward movement of said collar relative to saidrod, a sleeve provided with a cam surface supsame when the running-inmechanism is being lowered inthe tubing, said wire line when raisedlifting said rod and well tool while the collar is held stationaryrelative to the tubing so that the latch is engaged by said'cam surfaceto thereby release said latch'from the mandrel.

13. In combination, a wire line, a rod supported thereby, a sleevesupported by said rod, a mandrel, a second" sleeve extending over thelower portion of 'said mandrel, a latch normally conmeeting said firstsleeve to the upper portion of -,the mandrel, means connecting, saidfirst sleeve to the second sleeve so that all of the above named partsmaybe lowered as a unit into a well tubing, dogs carried by the secondsleeve to engage channels in the, tubing when the dogs are released,means to hold the dogs in retracted position as the wire line and partscarried thereby are lowered, means to release the mandrel from the firstsleeve when the wire line is raised, means to actuate the mandrel whenit is released by the first sleeve, cam means carried by the mandrelftending to actuate-said dogs whenthe mandrel is released so as toproject said dogs into said channel in the tubing vwhen the dogs havebeen raised adjacent to the channel, and 'n'ieans to thereupon releasethe-means connecting 'the first and second sleeves so that thefirst'sleeve may be removed from the tubing.

, RAYMOND' G. TAYLOR, JR.

